pillar coal mining method
... coal pillar mining under stress 煤柱应力下开采 pillar coal mining method 柱式采煤法 actual mining coal pillar 回采煤柱 ...
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The paper studied the gateway layout, the sectional top coal height and the coal mining technology of the coal mining method. Then the gateway and pillar top coal caving technology was developed.
对该采煤方法的巷道布置、阶段顶煤高度以及回采工艺进行了研究，形成了巷柱式放顶煤开采技术。
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